Drag-sawing machine



S F. STE ELE. v D rag-S awing M aohine.

No. 228,413. Patented June 1,1880.

I l VENTOR Z ATTORNEY WiTNESS S ljnlrn STATES SAMUEL F. STEELE, OFBARABOO, WISCONSIN.

DRAG-SAWING MACHINE.

SPECIFICATION forming part of Letters Patent No. 228,413, dated June 1,1880. Application filed April 7, 1830. (No model.)

To all whom it may concern Be it known that I, SAMUEL F. STEELE, acitizen of the United States, residing at Bar-aboo, ill the county ofSank and State of Wisconsin, have invented certain new and usefulImprovements ill Drag-Sawing Machines; and I do hereby declare thefollowing to be a full, clear, and exact description of the invention,such as will enable others skilled in the art to which it appertains tomake and use the same, reference being had to the aocom panyin g drawillgs, and to letters or figures of reference marked thereon, which form apart of this speciflcation, and in which- Figure l is a rear perspectiveof my improved machine. Fig. 2 is a top plan of the same.

My invention relates to certain new and useful improvements ill theclass of drag-sawing machines wherein the saw is reciprocated by theweight and muscular strength of the oper ator occupying a rising andfalling seat connected with the operating-lever, whereby said lever isoperated by the hand and feet and the weight of the operator whensitting upon the seat.

My invention has for its object the production of a drag-sawing machinein which the whole weight of the operator is adapted to act directlyupon the saw, while securing an easy and natural position of the musclesof the operator; and to this end the invention consists in the novelcombination and arrangement of parts, all as will be hereinafter fullydescribed, and specifically pointed out in the claims.

To enable others skilled ill the art to make and use my invention, Iwill now proceed to describe its construction and operation.

Referringto the accompanying drawings, like letters of referenceindicate like parts ill the several figures.

Ill the drawings, A A represent the beams forming the frame of themachine, upon which the operating parts are mounted, secured orconnected together by the cross-bars a; and supported at the rear end bythe legs a a.

B represents the operating-lever, carrying the saw 0 at its lower end,said leverbein g journaled or pivoted on a shaft, 11, mounted in theupper ends of the uprights I) b, secured'to and extending above thebeams A A.

D represents a lever, centrally secured to the operating-lever, andthrough which passes the i shaft 1), upon which said lever is journaled.{The rear end of the lever is connected to the 1 rear end of the risingand falling saddle or seat E through the medium of the connecting rod orbar (I, lever F, having a cross-rod, f, near the center, journaled inboxes or-bearings on top of the beams A A, and the rectangularconnecting and seat or saddle supporting bar 0.

The forward end of, the lever D is connected to a forward slottedextension, 0, of the seat or saddle E by means of the upright bars 0 0,ill the upper ends of which said beam is journa led or pivoted.

H H represent treadles journaled in boxes or bearin gs upon or to thebeams A A, forward of the uprights I) I), and connected with the rearend of the lever by the right-angular levers I I.

J represents a coiled spring connecting the operating-lever B with thecross-bar a of the beams A A. 4

When desirable to out very fast, I apply a weight to the saw by means ofa double coiled spring, L, secured to the bolt Z, connecting the lowerend of the operating-lever with the handle of the saw. The loop l,connecting said springs, passes over said handle, and when the spring iswound up by turning said bolt by a common wrench it is held by aratchet-wheel be given to the saw, which weight is very elastic, and inno way interferes with the clean cut of the saw, which cannot bepreserved with a dead weight, thus utilizing force without additionalweight.

The arms of the treadles, upon which the feet rest, are shorter than theangular levers connecting said treadles with the rear end of the leverD, which lessens the distance traversed by the feet of the operator. Bythis arrangement an easy and natural position of the muscles is secured,which more than compensates for the length of the treadles upon whichthe feet rest.

By the above-described arrangement of the seat or saddle and themechanism conncctin g it with the lever D, said lever never assumes aperpendicular position while working the saw and pawl, m'm. Thus anydesired weight can v on a three-foot stroke. Therefore the leverage isnot materially shortened, and consequently every pound of the operatorsweightis adapted to act directly on the saw.

The weight of an ordinary-sized man, when applied as above described, ismore than sufficient to draw the saw backward, in which movement thespring J is drawn to its full tension without any perceptible effort onthe part of the operator and its reaction or recoil greatly assists himin transferring his weight to his feet, resting on the treadles, thusutilizing the weight of the operator at the most important point inproducing the forward movement to the saw. the springJ can be regulatedby a thumb-screw at its lower end.

To operate the machine, the operator seats himself upon the seat orsaddle, straddling the frame, with his feet upon the treadles, andgrasping the operating-lever with his hands. The weight of the operatorupon the seat or saddle,through the connections with both ends of thelever D, vibrates it, which, through the medium of the operating-lever,draws the saw backward, while the forward motion is produced by theoperators weight upon treadles, assisted by the recoil of the spring Jand the operator pulling on the operatinglever, which produces thereciprocating movement to the saw necessary to cut the log or otherobject to be sawed.

The above-described arrangement of mechanism, with slight alterations,may be used for various propelling purposes, such as sawing The tensionof marble, operating corn-shellers, and various other machines.

Having thus fully described my invention, what I claim as new, anddesire to secure by Letters Patent, is

1. The combination, with the operatin glever B, of the transverse leverD, centrally secured to said le"er B, the rising and falling seat E,having the forward extension, 0, and intermediate mechanism connectingboth ends of the seat with said lever D, for operating the levers D Bthrough the medium of the movement of the seat, substantially as hereinshown and described.

2. The combination, with the operating-lever B, of the transverse leverD, connected to said lever B, rising and falling seat E, connected tosaid lever, treadles H H, right-angular levers 1 I, and therecoil-spring J, substantially as and for the purpose herein shown andde scribed.

3. The combination, with the o1')erating-le- "er B and the saw andhandle or pitman, of the projecting connecting-bolt l, the adjusta bledouble coiled spring L, secured to said bolt, with its connecting-coillpassing, over the saw handle or pitman, and the ratchet-wheel and pawlm m, substantially as and for the purpose herein shown and described.

In testimony whereof I aiiix my signature in presence of two witnesses.

S. F. STEELE.

\Vitnesses 'M. BENTLY,

B. I. KELsEY.

